<!doctype html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <title>Lin0517</title>
  <base href="/">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" type="image/x-icon" href="favicon.ico">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css" rel="stylesheet"
    crossorigin="anonymous">
  <script src="https://cdn.jsdelivr.net/npm/jquery@3.5.1/dist/jquery.slim.min.js" crossorigin="anonymous"></script>
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/js/bootstrap.bundle.min.js"
    crossorigin="anonymous"></script>
  <script src="https://cdn.staticfile.org/angular.js/1.4.6/angular.min.js"></script>
  <style>
    .sky {
      background-color: lightblue;
    }

    .tomato {
      background-color: coral;
    }
  </style>
</head>

<body ng-app="" ng-class="home">
  <div ng-class="home">
      <app-root></app-root>
  </div>

</body>

</html>